ASTROSAT CZTI

Data Quality Report

Orbit 26982

Creation date: 2024-06-27T19:35:14.196199
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A09_145T01_9000003900_26982cztM0_level2.evt modeM0/AS1A09_145T01_9000003900_26982cztM0_level2_quad_clean.evt
Size (bytes)704,776,320109,154,880
Size672.1 MB 104.1 MB
Events in quadrant A10,239,062570,314
Events in quadrant B3,385,671811,439
Events in quadrant C3,361,691763,996
Events in quadrant D3,936,435724,798

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0346480
B0137630
C0136820
D0157340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6226321251.590106%
B6226831.333119%
C62261161.863155%
D62261983.180212%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7526 6226 2687 2687 35.70% 43.16%
B 7526 6226 4 4 0.05% 0.06%
C 7526 6227 3 3 0.04% 0.05%
D 7526 6227 143 143 1.90% 2.30%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 14 235 5051792 38948.85 642 634 129.7
A 6 16 2688324 20724.44 642 634 129.7
A 8 192 23609 177.16 642 634 129.7
B 15 222 21480 128.78 854 836 160.3
B 0 219 20397 122.02 854 836 160.3
B 12 111 18355 109.28 854 836 160.3
C 14 238 132007 687.2 821 830 190.9
C 15 208 29040 147.78 821 830 190.9
C 13 61 5633 25.16 821 830 190.9
D 1 52 717505 3401.64 797 785 210.7
D 2 250 147550 696.56 797 785 210.7
D 2 234 26894 123.92 797 785 210.7

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter